Patents by Inventor J DIVYASREE

J DIVYASREE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Current regulation for stepper motors using dual loop control through voltage mode and current mode
    Patent number: 12143056
    Abstract: A stepper motor controller includes a first error amplifier, a second error amplifier, and a comparator. The first error amplifier has a first input adapted to be coupled to a current sensor to receive a sensed drive current, a second input adapted to receive an expected drive current and an output to provide a first error signal based on a comparison of the sensed drive current and the expected drive current. The second error amplifier has a first input adapted to be coupled to a voltage sensor to receive a sensed drive voltage, a second input coupled to the output of the first error amplifier and an output to provide a second error signal based on a comparison of the sensed drive voltage and the first error signal. The comparator has a first input adapted to receive a reference signal, a second input coupled to the output of the second error amplifier and an output to provide a stepper motor control signal based on a comparison of the reference signal and the error signal.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: November 12, 2024
    Assignee: Texas Instruments Incorporated
    Inventors: Venkata Naresh Kotikelapudi, J Divyasree, Ganapathi Shankar Krishnamurthy
  • CURRENT REGULATION FOR STEPPER MOTORS USING DUAL LOOP CONTROL THROUGH VOLTAGE MODE AND CURRENT MODE
    Publication number: 20230067632
    Abstract: A stepper motor controller includes a first error amplifier, a second error amplifier, and a comparator. The first error amplifier has a first input adapted to be coupled to a current sensor to receive a sensed drive current, a second input adapted to receive an expected drive current and an output to provide a first error signal based on a comparison of the sensed drive current and the expected drive current. The second error amplifier has a first input adapted to be coupled to a voltage sensor to receive a sensed drive voltage, a second input coupled to the output of the first error amplifier and an output to provide a second error signal based on a comparison of the sensed drive voltage and the first error signal. The comparator has a first input adapted to receive a reference signal, a second input coupled to the output of the second error amplifier and an output to provide a stepper motor control signal based on a comparison of the reference signal and the error signal.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 2, 2023
    Inventors: Venkata Naresh KOTIKELAPUDI, J DIVYASREE, Ganapathi Shankar KRISHNAMURTHY